 (To C64).
 (To C64).
 (To PC).
(To PC).
DZM 12 DREH to the C64 UserPort.
25 PIN D-SUB MALE to the PC
| C64 | Dir | PC | ||
|---|---|---|---|---|
| GND | A |  | 25 | GND | 
| PB0 | C |  | 10 | /ACK | 
| PB1 | D |  | 11 | BUSY | 
| PB2 | E |  | 12 | PE | 
| PB3 | F |  | 5 | D3 | 
| PB4 | H |  | 6 | D4 | 
| PB5 | J |  | 7 | D5 | 
| PB6 | K |  | 8 | D6 | 
| PB7 | L |  | 9 | D7 | 
| Contributor: | Joakim Ögren | 
| Source: | 64NET v1.82.58 documentation by Paul Gardner-Stephen | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10